Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Class DataTruncation - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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java.sql
Class DataTruncation

java.lang.Object
  |
  +--java.lang.Throwable
        |
        +--java.lang.Exception
              |
              +--java.sql.SQLException
                    |
                    +--java.sql.SQLWarning
                          |
                          +--java.sql.DataTruncation

public class DataTruncation
extends SQLWarning

An exception that reports a DataTruncation warning (on reads) or throws a DataTruncation exception (on writes) when JDBC unexpectedly truncates a data value.

The SQLstate for a DataTruncation is 01004.

See Also:: Serialized Form

Constructor Summary

DataTruncation(int index, boolean parameter, boolean read, int dataSize, int transferSize)
          Creates a DataTruncation object with the SQLState initialized to 01004, the reason set to "Data truncation", the vendorCode set to the SQLException default, and the other fields set to the given values.

Method Summary

int getDataSize()
          Gets the number of bytes of data that should have been transferred.

int getIndex()
          Retrieves the index of the column or parameter that was truncated.

boolean getParameter()
          Indicates whether the value truncated was a parameter value or a column value.

boolean getRead()
          Indicates whether or not the value was truncated on a read.

int getTransferSize()
          Gets the number of bytes of data actually transferred.

Methods inherited from class java.sql.SQLWarning

getNextWarning, setNextWarning

Methods inherited from class java.sql.SQLException

getErrorCode, getNextException, getSQLState, setNextException

Methods inherited from class java.lang.Throwable

fillInStackTrace, getLocalizedMessage, getMessage, printStackTrace, printStackTrace, printStackTrace, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

DataTruncation

public DataTruncation(int index,
                      boolean parameter,
                      boolean read,
                      int dataSize,
                      int transferSize)

Creates a DataTruncation object with the SQLState initialized to 01004, the reason set to "Data truncation", the vendorCode set to the SQLException default, and the other fields set to the given values.

Parameters:: index - The index of the parameter or column value; parameter - true if a parameter value was truncated; read - true if a read was truncated; dataSize - the original size of the data; transferSize - the size after truncation

Method Detail

getIndex

public int getIndex()

Retrieves the index of the column or parameter that was truncated.

This may be -1 if the column or parameter index is unknown, in which case the parameter and read fields should be ignored.

Returns:: the index of the truncated paramter or column value

getParameter

public boolean getParameter()

Indicates whether the value truncated was a parameter value or a column value.

Returns:: true if the value truncated was a parameter; false if it was a column value

getRead

public boolean getRead()

Indicates whether or not the value was truncated on a read.

Returns:: true if the value was truncated when read from the database; false if the data was truncated on a write

getDataSize

public int getDataSize()

Gets the number of bytes of data that should have been transferred. This number may be approximate if data conversions were being performed. The value may be -1 if the size is unknown.

Returns:: the number of bytes of data that should have been transferred

getTransferSize

public int getTransferSize()

Gets the number of bytes of data actually transferred. The value may be -1 if the size is unknown.

Returns:: the number of bytes of data actually transferred